This hatchling appears to be... dead?

Perhaps not. It seems to be active during the night.

Young dragons are relatively defenseless. They are born with relatively soft scales, which are shed and replaced with harder ones as the hatchling matures. Once a hatchling’s wings grow in, it typically marks the beginning of maturation. At this point they are often capable of hunting on their own and are usually left alone by their mother.

When a seemingly deceased hatchling grew wings and became reanimated, Goaranok Tar just sighed and shook her head. She'd seen this happen before. Darkemoon Helm is left well alone by the other hatchlings, who view him as different and frightening. His only friends are Bloodmoon, and of course, the other adult vampires. No one is sure what Darkemoon learns from Bloodnyte, and aren't sure they want to find out. The adult dragons warn the hatchlings to associate with the vampires as little as possible.